<!doctype html>
<html>
  <head>
    <link rel='match' href='focus_selector_ref.html'>
    <meta charset="UTF-8">
    <style>
      input:focus {
        outline: 2px solid orange;
      }
    </style>
  </head>
  <body>
    <input id="a">
    <input id="b">
    <script>
      document.getElementById("a").focus();
    </script>
  </body>
</html>
